american success story gone horribly wrong. eduardo saverin wants to defriend the united states of america, just to avoid paying taxes, and we aren't going to let him get away with it. >> democratic senator bob casey of pennsylvania is one of two senators who introduced the ex-patriot act. senator, good morning. >> good morning. >> i know we're talking a lot about eduardo saverin in particular but if there was one catalyst for you all to draft this legislation, this ex-patriot act, what was it? >> well, certainly, this is the most egregious example that we know of, but there are more than 1,700 other people who have done the same thing, and the basic thrust of this legislation says that if you expatriate yourself, in other words leave the country, renounce your citizenship, the legislation would provide a 30% tax on the gains that would you get, any kind of future investment gains if, and this is the key thing, if the irs were to determine that the reason you left was for a substantial tax purpose. if they make that finding, and it has to be an objective finding, then the tax would apply.